Calculator
A scientific calculator that runs entirely in your browser: arithmetic, powers, roots, trig (deg/rad), logarithms, π and e, implicit multiplication, answer memory and calculation history.
Tip: type with your keyboard — Enter to evaluate, Esc to clear. Functions use radians.
About this tool
This is a scientific calculator that runs entirely in your browser — no app to install and no data leaving your device. Alongside everyday arithmetic it handles powers and roots, trigonometric functions in degrees or radians, logarithms, and the constants π and e, so it covers both quick sums and more involved math.
It is built to feel fast and forgiving: implicit multiplication lets you write 2(3+4) without the star, an answer memory recalls your last result, and a running history keeps earlier calculations in view. That makes it handy for developers, students, and anyone who wants a capable calculator without opening a heavyweight app.
How to use
- Type an expression using numbers, operators, parentheses, and functions such as sin, cos, log, or sqrt.
- Switch between degrees and radians when you use trigonometric functions.
- Insert constants like π and e directly, and rely on implicit multiplication such as 2(3+4).
- Press equals to evaluate; the result appears immediately.
- Reuse the previous result through the answer memory in your next expression.
- Scroll the history to revisit or copy earlier calculations.
Features
- Full arithmetic plus powers, roots, logarithms, and trigonometric functions in one interface.
- Degree and radian modes so trig results match the units you are working in.
- Built-in constants π and e for physics, geometry, and engineering formulas.
- Implicit multiplication support, so expressions like 2(3+4) evaluate as expected.
- Answer memory to chain calculations without retyping the previous result.
- Calculation history that keeps recent expressions and results visible, all stored locally.
Frequently asked questions
Is my calculation history stored on a server?
No. The calculator runs fully in your browser and the history stays on your device. Nothing you compute is sent anywhere.
How do I switch between degrees and radians?
There is a mode toggle for trigonometric functions. Set it to degrees or radians before evaluating sin, cos, or tan so the angle is interpreted correctly.
What is implicit multiplication?
It lets you omit the multiplication sign in common cases — writing 2(3+4) or 3π is treated as 2*(3+4) and 3*π respectively, which makes expressions quicker to type.
Can I reuse the previous answer?
Yes. The calculator keeps an answer memory of your last result, so you can reference it in the next expression instead of copying the number by hand.
Which functions and constants are supported?
It supports arithmetic, powers and roots, trigonometric functions, logarithms, and the constants π and e, covering most day-to-day scientific and engineering math.